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Robert F Wilson, Jiyan Liu: Angiographic system with automatic high/low pressure switching. Invasatec, Merchant Gould Smith Edell Welter & Schmidt P A, September 1, 1998: US05800397 (209 worldwide citation)

An angiographic injector system includes a manifold and valve which selectively connects either a syringe pump or a low pressure system to a catheter which is inserted into a patient. The valve is normally biased to a state which connects the low pressure system to the catheter for pressure monitori ...


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Robert F Wilson, Jiyan Liu: Self purging angiographic injector. Invasatec, Kinney & Lange, November 12, 1996: US05573515 (152 worldwide citation)

An angiographic injector includes a syringe which is connected to a fluid reservoir through a valve which permits radiographic contrast material to be drawn from the reservoir into the syringe during a fill operation. The valve permits air to be expelled from the syringe through the valve during a p ...


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Robert F Wilson, Jiyan Liu: Dual port syringe. Invasatec, Oppenheimer Wolff & Donnelly, March 16, 1999: US05882343 (75 worldwide citation)

A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. D ...


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Douglas J Duchon, James B Easley, Christine Kronich: Pneumatic controller and method. Invasatec, Oppenheimer Wolff & Donnelly, June 29, 1999: US05916165 (73 worldwide citation)

A pneumatic control device includes a housing, a pressure control member secured to the housing, a first fluid-conduit member, and a first sensor. The pressure control member is constructed and arranged to selectively change a fluid pressure within the control member. The first fluid-conduit member ...


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Doug Duchon, Vince Copa: Control device for providing a variable control signal to a fluid-supplying machine. Invasatec, Oppenheimer Wolff & Donnelly, November 23, 1999: US05988587 (22 worldwide citation)

A control device for controlling a fluid supplying machine. The control device includes a first handle and a second handle connected by a resilient attachment member. The resilient attachment member is configured to allow the first handle to move with respect to the second handle in response to an i ...


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Duchon Doug, Copa Vince: Control device for providing a variable control signal to a fluid-supplying machine. Invasatec, July 26, 2000: EP1021813-A1 (1 worldwide citation)

A control device (10) for controlling a fluid supplying machine. The control device includes a first handle (12) and a second handle (14) connected by a resilient attachment member (16). The resilient attachment member (16) is configured to allow the first handle (12) to move with respect to the sec ...


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Duchon Doug, Paulson Thomas, Wilson Robert F, Liu Jiyan: Dual port syringe. Invasatec, August 9, 2000: EP1024847-A2 (1 worldwide citation)

A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. D ...


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Duchon Doug, Paulson Thomas, Wilson Robert F, Liu Jiyan: Angiographic injector system with automatic high/low pressure switching. Invasatec, August 9, 2000: EP1024749-A2

An angiographic injector system includes a manifold and valve which selectively connects either a syringe pump or a low pressure system to a catheter which is inserted into a patient. The valve is normally biased to a state which connects the low pressure system to the catheter for pressure monitori ...